Number Ideas Through Pictures (Young Math) Charosh, Mannis. Odd/even,square/triangular numbers. Unusual presentation of number concepts, dated but very useful for me.

Numberline Lane series Y- the authors sent me the first five in their series. My 6 and 4 y/old girls really enjoyed the illustrations. More along the lines of MathStart, less story, more math, but they did enjoy them.

Sea Sums by Joy Hulme, not as nice as Sea Squares, but a nice book for addition

Senefer: A Young Genius in Old Egypt (Young Readers) ► by Beatrice Lumpkin - wonderful living book on several accounts, but as Senefer learns the Egyptian way of writing numbers, it emphasizes how number bases are constructed. Addition and multiplication are woven in the story as well.

Galaxy Getaway (Math for Martians) by Ferris, Julie; Tassie, Jane – This is a multi-concept book that uses a story-line to present a series of puzzles using a variety of math skills

I Love Math Series, Timelife ► - There are 13 of these multi-concept books, each with themes ranging from sports and nature to space and the mall. They are out of print, but still available. See the "I Love Math" page for the list of books with brief descriptions. These may be the most read math readers in our home library over the past decade.